TRIBE VI. PHLCEOTRIBIXI. 



657 



antennal club suggests a closer affinity with the true Phloeotribns 

 than in any other species of the genus PMocopJitltorua which in- 

 cludes our typical species P. frontal is Oliv. and P. liininaris 

 Harris. No true Plilceotribus has yet been recognized from the U. 

 S. (Hopkins.) 



1062 (9159). PHLCEOPHTHORUS LIMINABTS Harris, Rep. Ins. Inj. Veg., 

 1852, 78. 



Closely allied to the next but differing by the finer punctuation of 

 thorax, elytral intervals flat, without acute granules though still feebly 

 serrate at sides and apex, and by the much longer, lamellate joints of 

 antennae. Length 2.2 mm. 



Occurs from Atlantic States and Canada to Tennessee, depre- 

 dating on peach. New Jersey, May, on peach, plum, cherry. 

 Food plants, Pninits persica. arnieniaca, cerasus. xcrofina : /'/////* 

 mains. (Swaine.) Originally falsely accused of causing the dis- 

 ease known as "yellows" on peaches, this species is now known 

 to attack only moribund peach and allied trees. It runs trans- 

 verse galleries in the inner bark, two diverging from a common 

 entrance chamber, in which many eggs are laid at close intervals. 

 These hatching, the young grubs make their expanding sinuous 

 channels at right angles to the parent galleries. The remedy is 

 to cut and burn the infested trees. In West Virginia Hopkins 

 found adults in February, April, May, July and November. They 

 hibernate in the outer bark of living trees. In Europe a similar 

 species is found on olive. 



1063 (9160). PHLCEOPHTHORUS FKONTALIS Oliv., 1795, 78. 



Small, cylindrical, short, Brown, antennae and legs ferruginous, 

 clothed with short stiff hairs. Head in male broadly concave, armed with 



a small, erect, acute spine each side above 

 the insertion of the antenna, the spines 

 varying in length according to the indi- 

 vidual; head in female nearly flat with a 

 faint crescentic impression. Antennae with 

 3-jointed lamellate club, joints not more 

 than twice as wide as long, funicle short, 5- 

 jointed. Thorax finely not densely granu- 

 late-punctate. Elytra with basal margins 

 separately arcuate, acute and serrate, and 

 with deep striae of large punctures; inter- 

 vals narrow with single rows of small 

 acute granules, sides and apex strongly ser- 

 rate. Tibia? dilated, compressed, obliquely rounded and serrate at tip, 



with the inner angle slightly mucronate. Length 1.5 2 mm. (Fig.152.) 



